The synchronous force control of a double-axial pneumatic actuating system

It is to design the synchronous force controller of a double-axial pneumati c actuating system. This system is ideally decomposed into two independent subsystems, and the coupling effect is considered as the noise effect. So, each subsystem can be simulated as an auto-regressive moving average proces s with exogenous input (ARMAX) model. Each subsystem can use the self-tunin g control (STC) algorithm to design the force controller individually, and then a synchronous force regulator is designed to force one subsystem to tr ace the other and reach the synchronous force control function. The experim ents verify that this approach can be successfully used for the double-axia l pneumatic actuating system. In addition, its adaptation and robustness ar e proven by the frequency response analysis.